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最新的 Databricks Certification Databricks-Certified-Data-Engineer-Professional 免費考試真題:

1. The data architect has mandated that all tables in the Lakehouse should be configured as external Delta Lake tables.
Which approach will ensure that this requirement is met?

A) Whenever a table is being created, make sure that the location keyword is used.
B) When tables are created, make sure that the external keyword is used in the create table statement.
C) When configuring an external data warehouse for all table storage. leverage Databricks for all ELT.
D) When the workspace is being configured, make sure that external cloud object storage has been mounted.
E) Whenever a database is being created, make sure that the location keyword is used Get Latest & Actual Certified-Data-Engineer-Professional Exam's Question and Answers from

2. A junior data engineer has been asked to develop a streaming data pipeline with a grouped aggregation using DataFrame df. The pipeline needs to calculate the average humidity and average temperature for each non-overlapping five-minute interval. Incremental state information should be maintained for 10 minutes for late-arriving data.
Streaming DataFrame df has the following schema:
"device_id INT, event_time TIMESTAMP, temp FLOAT, humidity FLOAT"
Code block:

Choose the response that correctly fills in the blank within the code block to complete this task.

A) slidingWindow("event_time", "10 minutes")
B) await("event_time + `10 minutes'")
C) withWatermark("event_time", "10 minutes")
D) delayWrite("event_time", "10 minutes")
E) awaitArrival("event_time", "10 minutes")

3. A distributed team of data analysts share computing resources on an interactive cluster with autoscaling configured. In order to better manage costs and query throughput, the workspace administrator is hoping to evaluate whether cluster upscaling is caused by many concurrent users or resource-intensive queries.
In which location can one review the timeline for cluster resizing events?

A) Cluster Event Log
B) Workspace audit logs
C) Driver's log file
D) Ganglia
E) Executor's log file

4. A junior data engineer seeks to leverage Delta Lake's Change Data Feed functionality to create a Type 1 table representing all of the values that have ever been valid for all rows in a bronze table created with the property delta.enableChangeDataFeed = true. They plan to execute the following code as a daily job:
Get Latest & Actual Certified-Data-Engineer-Professional Exam's Question and Answers from

Which statement describes the execution and results of running the above query multiple times?

A) Each time the job is executed, the differences between the original and current versions are calculated; this may result in duplicate entries for some records.
B) Each time the job is executed, only those records that have been inserted or updated since the last execution will be appended to the target table giving the desired result.
C) Each time the job is executed, the entire available history of inserted or updated records will be appended to the target table, resulting in many duplicate entries.
D) Each time the job is executed, the target table will be overwritten using the entire history of inserted or updated records, giving the desired result.
E) Each time the job is executed, newly updated records will be merged into the target table, overwriting previous values with the same primary keys.

5. Although the Databricks Utilities Secrets module provides tools to store sensitive credentials and avoid accidentally displaying them in plain text users should still be careful with which credentials are stored here and which users have access to using these secrets.
Which statement describes a limitation of Databricks Secrets?

A) The Databricks REST API can be used to list secrets in plain text if the personal access token has proper credentials.
B) Secrets are stored in an administrators-only table within the Hive Metastore; database administrators have permission to query this table by default.
C) Iterating through a stored secret and printing each character will display secret contents in plain text.
D) Because the SHA256 hash is used to obfuscate stored secrets, reversing this hash will display Get Latest & Actual Certified-Data-Engineer-Professional Exam's Question and Answers from the value in plain text.
E) Account administrators can see all secrets in plain text by logging on to the Databricks Accounts console.

問題與答案：